[PATCH] powerpc/prom_init: Fix kernel config grep

[Liam Howlett]

When searching for config options, use the KCONFIG shell variable so
that builds using non-standard config locations work.

Signed-off-by: Liam R. Howlett <Liam.Howlett@xxxxxxxxxx>
---
 arch/powerpc/kernel/prom_init_check.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/powerpc/kernel/prom_init_check.sh b/arch/powerpc/kernel/prom_init_check.sh
index b183ab9c5107..dfa5f729f774 100644
--- a/arch/powerpc/kernel/prom_init_check.sh
+++ b/arch/powerpc/kernel/prom_init_check.sh
@@ -13,7 +13,7 @@
 # If you really need to reference something from prom_init.o add
 # it to the list below:
 
-grep "^CONFIG_KASAN=y$" .config >/dev/null
+grep "^CONFIG_KASAN=y$" ${KCONFIG_CONFIG} >/dev/null
 if [ $? -eq 0 ]
 then
 	MEM_FUNCS="__memcpy __memset"
-- 
2.35.1